Given that information below for an employer, create the complete crows foot ERD

containing all primary keys, foreign keys, and main attributes. Hint: Add

Overlapping$/$Disjoint super$-/$sub$-$types as needed

$$ An employee could be staff or a professor or an administrator.

$$ A professor may also be an administrator.

$$ Staff employees have a work level classification, such a Level I and Level II$.$

$$ Only professors can chair a department. A department is chaired by only one

professor.

$$ Only professors can serve as the dean of a college. Each of the university$$s

colleges is served by one dean.

$$ A professor can teach many classes.

$$ Administrators have a position title.

$$ Some staff employees are information technology $($IT$)$ personnel.

$$ Some IT personnel provide technology support for academic programs.

$$ Some IT personnel provide technology infrastructure support.

$$ Some IT personnel provide technology support for academic programs and

technology infrastructure support.

$$ IT personnel are not professors.

$$ IT personnel are required to take periodic training to retain their technical

expertise.

$$ The employer tracks all IT personnel training by date, type, and results

$($completed vs$.$ not completed$).$